North F Catoctin Creek at Rt 681 Near Waterford, VA
USGS Site No: 01638420 • North F Catoctin Creek • Loudoun County, VA
North F Catoctin Creek at Rt 681 Near Waterford, VA on the North F Catoctin Creek is currently at 9 cfs (Normal — 37th percentile for this date) . Gage height: 1.96 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 4 | |
| 25th | Low threshold | 7 | |
| 50th (Median) | Normal (median) | 12 | Today: 9 cfs |
| 75th | High threshold | 51 | |
| 95th | Very High threshold | 183 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 27, 2026 | 14 | — |
| May 26, 2026 | 17 | — |
| May 25, 2026 | 22 | — |
| May 24, 2026 | 36 | — |
| May 23, 2026 | 27 | — |
| May 22, 2026 | 7 | — |
| May 21, 2026 | 5 | — |
| May 20, 2026 | 5 | — |
| May 19, 2026 | 4 | — |
| May 18, 2026 | 5 | — |
| May 17, 2026 | 5 | — |
| May 16, 2026 | 5 | — |
| May 15, 2026 | 5 | — |
| Apr 21, 2026 | 11 | — |
| Apr 20, 2026 | 13 | — |
| Apr 19, 2026 | 11 | — |
| Apr 18, 2026 | 8 | — |
| Apr 17, 2026 | 9 | — |
| Apr 16, 2026 | 10 | — |
| Apr 15, 2026 | 10 | — |
| Apr 14, 2026 | 11 | — |
| Apr 13, 2026 | 11 | — |
| Apr 12, 2026 | 11 | — |
| Apr 11, 2026 | 11 | — |
| Apr 10, 2026 | 12 | — |
| Apr 9, 2026 | 12 | — |
| Apr 8, 2026 | 13 | — |
| Apr 7, 2026 | 16 | — |
| Apr 6, 2026 | 19 | — |
| Apr 5, 2026 | 16 | — |
Station Information
- USGS Site No
- 01638420
- State
- VA
- County
- Loudoun County
- Coordinates
- 39.2050, -77.6239
- Drainage Area
- 23 mi²
- Datum (ft)
- 325.7
- HUC Code
- 02070008
Flood Stage Thresholds
- Action Stage
- 8.0 ft
- Flood Stage
- 10.0 ft
- Moderate Flood
- 14.0 ft
- Major Flood
- 16.0 ft
Currently 8.04 ft below flood stage.
Recent Extremes
- Max discharge
-
176 cfsMay 14, 2025
- Min discharge
-
1 cfsNov 18, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Potomac River at Point Of Rocks, MDVery High6.4 mi · 34,600 cfs
-
Catoctin Creek Near Middletown, MDHigh15.8 mi · 101 cfs
-
Antietam Creek Near Sharpsburg, MDNormal17.8 mi · 271 cfs
-
Marsh Run at Grimes, MDNormal22.9 mi · 13 cfs
-
Patuxent River Near Unity, MDNormal30.5 mi · 24 cfs